Signal



2 Sheets-Sheet 1.

(No Model.)

J. P. COLEMAN.

SIGNAL.

Patented May 17, 1898.

FIB. E.

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TME NoRms PETERS co, PHmo-u'mou WASHINGION. a. c

(No Model.) 2 Sheets-Sheet 2.

J. P. COLEMAN.

SIGNAL.

No. 604,304. A Patented May 17, 189% WITNESSES: lNVENTOR,

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I V UNITED STATES PATENT GEEICE.

JOHN PRESSLEY COLEMAN, OF EDGEWOOD PARK, PENNSYLVANIA, AS- SIGNOR TO THEUNION SWITCH AND SIGNAL COMPANY, OF SWISS- VALE, PENNSYLVANIA.

SIGNAL.

SPECIFICATION forming part of Letters Patent No. 604,304, dated May17,1898.

Application fil d March 1, 1898. Serial No. 672,185. (No model.)

To all whom it may concern:

Be it known that I, JOHN PRESSLEY OoLE- MAN, a citizen of the UnitedStates, residing at Edgewood Park, in the county of Allegheny and Stateof Pennsylvania, have invented or discovered certain new and usefulImprovements in Signals, of which improvements the following is aspecification.

The invention described herein relates to certain improvements insemaphore-signals of that class or kind generally known asthree-position signals, which are adapted to be shifted from normal ordanger position to caution and safety positions.

It is necessary in all railway-signals that the indicator-blade shouldbe so mounted that in case of the breakage of any of the con nectionsbetween thesignal and its operating mechanism the blade will certainlyand automatically return to normal or danger position. To this end theinvention consists, generally stated, in the employment of a weightwhich is connected to the signalblade and is adapted to be raised whenthe signal is shifted to clear or caution position and to operate whenfree to act to return the signal to normal or danger position.

In the accompanying drawings, forming a part of this specification,Figures 1 and 2 are sectional elevations of signals, illustrating,

respectively, two different forms or modifications of my improvement.Fig. 3 is a sectional view, the plane of section being indicated by theline III III, Fig. 1. Fig. 4 is a similarviewona plane indicated by theline IV IV, Fig. 2. Figs. 5, 6, and 7 are views similar to Fig. 1,illustrating further modifications of my improvement; and Figs. 8 and 9are sectional detail views of the construction shown in Figs. 6 and 7,respectively.

In the practice of my invention the signalblade is pivotally supportedon the post 2 in the usual or any suitable manner. In lieu ofcounterweighting the short or spectacle end, so that it will be heavierthan the blade portion, the portions on opposite sides are made ofapproximate equal weight. The upper end of the rod 3 is connected to thesignal at one side of its pivotal point,while the lower end of the rodis connected to a floating lever 4:.

An operating-rod 5 is connected at one end either to the lever 4 or toan extension of the signal-rod. In the construction shown in Figs. 1 to4 the lever 4, which has a weight 4 secured on or near one end, isarranged transversely of a casing or frame 6, secured to thesignal-post, and the casing is provided with guides 7 which will preventlateral movements of the signal and operating rods 3 and 5. Suitableabutments or fulcra 8 and 8 are arranged on opposite sides of the leverand on opposite sides of the point of connection of the signal-rod tothe lever. These abutments or fulcra may be formed by rollers mounted onsuitable pins, as shown in Figs. 1 and 3, or by the ends of slots 9 9,formed in the sides of the casing or frame 6 for the reception of pins1010 passing through the lever.

In the construction shown in Fig. 5 slotted links 11 11 are connected tothe floating lever, and the fulora 8 8 are formed by bolts or studssecured to brackets 12, bolted to the signal-post, said brackets beingprovided with sleeves 7 ,which will guide the signal and operating rods.

In the construction shown in Figs. 6 and 8 the lateral movement of therods, and consequently the longitudinal movement of the floating lever,is prevented by forks l3,formed on the lever and adapted to engage thefulcra 8 and S. The signal-rod 3 may have an antifriction-roller 14,mounted thereon and adapted to move upand down in a slot 15, formed in aplate 16, secured to the signalpost, as shown in Figs. 7 and 9, andhaving the fulcra 8 8 secured thereto.

If the signal-rod be forced upwardly to clear the signal, the weightedend of the lever dis raised, the lever turning on the fulcrum 8. If,however, the operating-rod be pulled down to shift the signal tocaution, the lever 4 will turn on the fulcrum 8, the weighted end of thelever being again raised.

It will be readily understood from the foregoing that in case of thebreakage of the connections to the operating-lever when the signal iseither at clear or caution position the weight in the lever will causethe signal to move to danger or normal position, where it will be heldby the lever bearing upon the abutments or fulcra 8 and 8 end, a rodconnecting the signal to the lever, fulcra arranged on opposite sides ofthe point of connection of the rod to the lever, and 15 means forcausing the lever to turn on either fulcrum, substantially as set forth.

In testimony whereof I have hereunto set my hand.

J 'OI-IN PRESSLEY COLEMAN.

Witnesses:

DARWIN S. WOLCOTT, F. E. GAI'IYHER.

